"The habituées of Andy Warhol's Factory were known for their alleged use of recreational pharmaceuticals, so it is perhaps appropriate that when the Cologne drug company Dr. Madaus, published a fiftieth anniversary photobook, it was designed as a 'Pop art' extravaganza similar to Warhol's Index...[it is] not only a cornucopia of design and layout ideas, it features several pop-up pages in the style of a children's book. The result combines a high purpose with a sense of fun."--Parr & Badger, The Photobook: A History, Vol. II